Don't renovate without an advocate.
Renovations falter from lack of coordination and communication.
Renovations often go over time and over budget — not because anyone is bad at their job, but because every role has its own scope. The coordination across them — the bigger picture for the homeowner — is what tends to fall through the cracks.
We focus on the bigger picture.
Design and Biz is an independent owner's representative for Westchester homeowners. We take the broader view across the whole project — anticipating what falls between scopes and minimizing surprises around cost, delays, and town requirements. And our four free AI tools surface costs, permits, energy, and climate risk before construction starts.
Two ways to bring an advocate onto your project
Start with our flat-fee Design Phase Diagnostic. If you continue with us through construction, the fee credits toward Owner Representation.
Design Phase Advocacy
An independent advocate before construction starts. We catch what your architect misses — before it costs you six figures.
Satisfaction guaranteed — if you're not satisfied with the Diagnostic, we'll refund your fee.
- Day-Zero Diagnostic — true budget, regulatory triggers, site constraints
- Independent reviews at schematic and design development
- Vendor strategy & GC selection support
- Conflict-of-interest watchlist across your project team
- AI-accelerated finish boards & renderings
Owner Representation
Full advocacy through construction. We're with you from break-ground to final walkthrough — managing vendors, reviewing change orders, protecting your interests.
- Continuous remote and on-site project oversight
- Vendor management and change-order review
- Permit, code, and inspection strategy
- Energy and risk-mitigation guidance throughout build
- Independent dispute support when things go sideways
We are paid only by you — never by contractors, architects, GCs, lenders, or any vendor on your project. Read our independence pledge →
What our work actually produces
A featured case study and shorter snapshots from real client decisions — including the ones that ended in “no.”
The “simple” prefab ADU that wasn’t
The homeowner was already mid-renovation on her main house when she started looking at adding a prefab ADU — a place for aging parents to stay close while keeping some independence. Prefab manufacturers, modular press coverage, contractor estimates in hand: the project looked straightforward on paper. Then we did the Day-Zero Diagnostic.
What we found
Permit timeline
A standalone structure typically takes several months to permit. With the main-house renovation already underway, the ADU pathway risked derailing the work in progress.
Septic capacity
NYS Appendix 75-A Table 1 tiers daily design flow at 110/130/150 gpd per bedroom by plumbing-fixture age. Adding bedrooms could have forced a septic upgrade on a property already in motion.
All-in cost
New foundation, utility runs to a detached structure, and potential septic upgrade made the “simple” prefab sticker price look meaningfully different than the quote suggested.
What we proposed
Convert the existing unfinished attached garage into a self-contained in-law suite — separate entrance, private bathroom, kitchenette. Same functional outcome as the ADU, integrated with the main-house permit set, designed to stay within the existing septic capacity, with code-compliant fire separation under IRC R302.3. She went with the garage conversion. Faster to permit, lower all-in cost, and it didn’t compete with the renovation already in flight.
Most projects don’t have an alternative this clean — but almost every project has a version of this analysis.
Read the full case studyKim, a Westchester homeowner, was planning solar for her new house alongside an EV with bidirectional charging — a battery on wheels parked in her garage. Her contractor pushed her toward adding on-site storage, arguing V2H tech was still too nascent to plan around. Kim ran the setup through WattsWut, read our post on on-site storage vs. bidirectional EVs, and reached out to talk it through. After working through her use case together, the math was clear: leaning on the EV’s battery would be far more cost-effective than installing her own.
She didn’t buy the storage she didn’t need.
James, an NYC homeowner with a grandson in Pound Ridge, had the chance to buy his close friend’s house for $750K when the friend moved on. The price already sat above comps, and a closer look revealed the house would need substantial work just to be livable. James ran the property through Design and Biz’s tools, read the blog, and reached out to scope a potential renovation. By the end of the conversation the all-in cost was clear — well past his budget — and James walked away from the deal.
He didn’t hire us for the renovation, but he didn’t lose six figures on a house that wasn’t worth it either.
Free AI Tools
Three steps. Zero guesswork.
Enter Your Address
Tell us where your home is and what you're planning. Our tools use your location to pull local codes, costs, and climate data.
Get Instant Insights
Pick any of our free AI tools — permits, costs, energy, or disaster risk. Get a detailed, personalized analysis in minutes.
Take Action
Use your results to hire smarter, budget better, and avoid surprises — or talk to one of our advisors for hands-on help.
CostWut!
Most homeowners underestimate by 30–50%. See the realistic range — soft costs, contingencies, and the surprises included.
See what it really costsPermitWut!
The permit requirement nobody tells you about is the one that derails your project. See what your scope actually triggers — sprinklers, septic, conservation — before design locks in.
See what gets triggeredWattsWut!
Most homeowners renovate first and electrify later — and pay double for it. See what to swap during the renovation, and which incentives you'll lose if you wait.
See what to swapRiskWut!
Insurance carriers know your home's risk score. You probably don't. See what they're seeing — and the hardening upgrades that actually move premiums.
See my risk score
Not sure where to start?
Tell us about your project and we'll point you in the right direction.